Type-writing machine.



entre sans .aar entre.

ARTHUR 3. BRIGGS', OF SYRACUSE, NEW YORK, ASSIGNOR T O REMINGTONTYPEWRITER COMPANY, OF ILION, NEW YORK, A CORPORATION OF NEW YORK.

TYPE-WRITIN G MACHINE.

Specification of Letters Patent.

Patented Mar. 23,1915.

Application led April 17, 1914. Serial N0. 832,475.

@L rlhis invention relates to improvements in fractional line-spacingmechanisms, or platen-clutches, of typewriting machines, the main objectof the invention being to produce a satisfactory platen-clutch of, anespecially simple and compact construction.

'lhe invention consists of a clutch that has the features ofconstruction hereinafter described and specitied in the claims and thatnormally connects together a cylindrical platen and line-spacing Wheel,Abut enables the platen to be separately rotated when mounted as usualin a paper carriage.

In the accompanying drawings, in which like reference numerals designatelike parts in the dilierentviews, Figure 1 is a front view and verticalsection of this clutch, and the linespacing Wheel and a fragment of theplaten of a typewriting machine; l1`ig. 2, a perspective of the body ofthe clutch; Fig. 3, a perspectire of the line-spac1ng wheel; Fig. l, aperspective of a case in which the line-spacing ivheel tits; Fig. 5. a

perspective of a part of the clutch; Fig/6,'

in end view of the clutch and line-spacing wheel, at the left of theplane a', fr, Fig. 1; Fig. T, a cross-section of the clutch on the planey, y, Fig. 1; Fig. 8, a side vienY of the clutch, line-spacing wheel andfragment of the platen; and Fig. 9, an enlarged cross-section, on theplane e, s, Fig. 1, of the hub of the linger-wheel and a push-rod Withinit.

rllhe platen 1 is made fast as usual (pref` erably at the end not shown)to the platen shaft 2, comprising also the tubular part 3 in which areslots I`l; and loosely litted in these slots is a block 5 which extendstransversely through the tubular part 3, and is movable transversely andaxially of the shaft but constrained to turn with it. The edges orsurfaces 6 of this block (Fig. 7) are ilat, except at its outer endwhere they curve as shown and form faces of small projections '7, and inthe outer end of the block is a notch or recess The inner end 9 of thisblock rests against acoiled spring l0 contained in the tubular part 3 ofthe shaft 2,

which latter may be of any suitable length, though only a. small part ofthe solid portion 2 is illustrated. The spring 10 tends to force theblock outward, or from the platen.

The body of the clutch comprises a slotted, cylindrical block, the slotforming recesses 13 and dividing the block into parts 14 and 15 whichhave surfaces 16 and 17, each being a part of a cylindrical surface. Thehead 11 has a flange 1S which extends outward from the surfaces 16 and17. TWO j amb blocks 19 and 2O lit loosely in the recesses 13, theoutersurfaces 21 of these blocks being curved to form continuations ofthe surfaces 16 and 17 of the body. The inner surfaces 22 of thesejamb-blocks are flat. The line-spacing Wheel 23 is a ring having acylindrical inner surface 24, a cylindrical outer surface a head 11 anda hub 12 25, crown teeth 26, and notches or depres,

sions 27 in which ts the detent 28 (F ig. 6). A cylindricalcase 29is ailxed to the end of the platen by screws 30.A

The line-spacing wheel extends into the case 29, the outer edge of whichbears against the shoulder of the Wheel at the inner ends of the notches27,- and the body of the clutch extends into and through theline-spacing wheel, the surfaces. 16 and 17 of the body fitting looselyWithin the surface 24 of the wheel, and the iiange 18 'of the body beingclose to the wheel and surrounded by the crown teeth 26. Hence the wheelis loosely confined between the case 29 and the liange 18 so that eithervthe Wheel or platen may be separately turned on the platen-axis. Thehub 12 ofthe body Hts snugly on the part 3 of the platen-shaft to whichit is fastened by screws. 31, and the block 5 is in the'body, betweenthe parts 14: and l5, the axis of the platen passing through the block.Balls 32 are contained in the recesses 13 in the body' between the block5 and the liamb-blocks 19 and 20, these blocks and the sides of therecesses 13 forming ball-retaining walls, and the balls bear on thesurfaces 6 of the block 5 and the flat faces 22 of the jamb-blocks. Thebearing surfaces 6 of the block 5 slope very slightly, so that theplanes in which they lie meet at a point on the axis of the platen,remote from the clutch, the block being approximately a hundredth of aninch Wider at the end 9 than it is next to the inner ends against theinner surface 24 of the linespac.

'ing wheel, .so that it and the platen are clutched together.' Then theaction of the block 5-on the balls is that of a wedge, and since thisblock or wedge is loose in the slots 4, so that the whole block ismovable toward and from either ball, both balls and both jamb-blockswill be tightly held between the wedge and thesurface 24, even'if oneball is slightly larger than the other, or if one jamb-block is slightlythicker than the other. Consequently this block or wedge is so movable,when it is forced by the spring to act -on the balls', that itcompensates automatically for small inequalities in the balls and'jainh-blocks, such as are apt to exist and would be apt to have a badeffecten the action of the clutch unless the block or wedge -could movetransversely of theplaten-axis.'

The finger-wheel 33 ofthe platen is fast on a hub and sleeve or shbrtshaft 34 which extends into the hollow part 3 of the platen shaft and islfastened therein by the. screws 3,1, which pass through holes in thepart 3 nd bear at'their inner ends against iiattened parts of the shaft34. A push-rod 35 eX- tends loosely through the shaft 34: and-.into therecess 8 1n the block 5, this push. rod having at its outer end a thehub 34 is a screw 37, and in the rod 35 are recesses 38 and 39 (Figs. 1and 9) the inner ends of which cov-act with the screw 37 to limit theaxial movement of the rod.

To release the platen from -the line-spaeing wheel, and enable theplaten tobe separately rotated 'to any desired extent, the push-'rod orreleasing device is pressed in- .ward until the outer end ot the recess38' in the rod is close to the screwv 37 The rod may then be locked bturning. it so as to bring the inner end o the recess 39 behind thescrew. The push-rod forces the block 5,

inward lengthwise of the common axis of the platen,` line-spacing wheeland clutch, and the block rolls the balls axially of the platen and theclutch and from its head 11, vand when the block is at the inner end ofits movement .where it exerts' no pressure on spacing wheel, and. eitherthe platen or `heel may be separately .rotated in either `irection.vWhen the push-rod is turned again, so as to nger-butto'n 36. In

the jamb-blocks- 19 and 2O are bring the ends of the recess 38 intoalinement with the screw 37, and the spring 10 is allowed to move Vtheblock 5 outward, vthe balls are rolled by the block toward 'the ljamb-blocks areforced'by the balls tightly against the Aline-spacingwheel, and thereafter the platen wlll be rotated by the' linespacingmechanism 'as though' the spacing wheel were ahxed immediately toltheplaten, this mechanism comprising, for example, a handle and a pawl such'as are usually contained in Yost machines, the pawllbeing 'operative onthe crown teeth 26 to turn. the line-spacing wheel. 1 f

lt will be understood that the invention can be embodied in mechanismdiering more vorless in details of construction from that which has beendescribed herein. What I claim as new and desire to secure by LettersPatent, is

l. In a typewriting machine, comprisin a cylindrical platen and alinespacing whee separately movable on a common axis, a connecting rotaryclutch including apair fof rollers and a device which extends betweenthem and has opposite faces on which'the head 11 of the clutch and therollers act when the platen-and line spacingV e wheel are clutchedtogether, said device being movable in the directions in which therollers travel as they roll upon it, and being further movable ,bodilytoward each roller when that roller is loose.

2. In av typewriting machine, comprising a cylindrical platen and a linevspacing wheel separately movable' on a common axis,

a connecting clutch having ball-retaining walls, and includingballs,`each ball being .between outer and inner .walls the bearingVverselyof said axisand operativeon thel balls to roll'them axially ofthe clutch.

4. In a typewriting machine, comprising a cylindrical platen and alline-spacing wheel separately movable on a common axis', a connectingrotary clutchlincludng balls and a evice on which the balls bear andthrough fof said device being in converging' planes ."that meet at apoint on said`axis remote ,l from the clutch and said device beingconstrained to turn with the laten and being movable lengthwise of saiaxis and opera,-4

Lwhich said axis passes, the bearing surfaces tive on the balls to rollthem axially of the clutch.

5. In a typewriting machine, comprising a cylindrical platen andaline-spacing wheel separately movable on a common axis, a connectingrotar .clutch including outer ballretaining wal s, a pair of balls,anda4 device which forms inner ball-retainingfwalls and through which saidaxis passes, the'bearing i0 surfaces of said outer walls sloping'towarda point on said axis remote from the clutch, and said device beingmovable lengthwise and transversely of said axis and operative on theballs to roll them axially of the clutch. y

(l. ln a typewriting machine, comprising a cylindrical platen and aline-spacing whccii separately movable on a common axis, a connectingrotary clutch including outer ballretaining walls, a pair of balls, anda device which forms inner ball-retaining walls and through which saidaxis passes, the bearing surfaces ot' said outer walls and of saiddevice sloping toward points on said axis that are remote from and onone side of the clutch and said device being movable lengthwise o saidaxis and operative on the balls to roll them axially of the clutch.

i'. In a type\\'i'iting machine, comprisinf1r :i0 a cylindrical platenand a line spacing whee separately movable on a common. axis, aconnecting rotary clutch having ball-retaining walls, and includingballs, a spring, and a releasing device, some of said walls beingnormally n'essed against the balls by the spring and being movable bythe releasing device lengthwise of said axis and against the force ofthe spring to roll the balls axially of the clutch and being furthermov- 40 able transversely of said axis.

8. In a typewriting machine, comprisin a cylindrical platen and aline-spacing whee separately movable on a common axis, a connectingclutch includin balls,'a bloclc on which the balls bear an through whichsaid axis passes and which is movable lengthwise and transversely of theaxis, a

spring thatacts lengthwise of said axis, and

a releasing device the block being coneo strained to turn with theplaten and being normally pressed against the balls by the spring andbeing movable by the releasin device against the force of the spring toro the balls axially of the cluteh.

9. In a typewriting machine, comprising a cylindrical platen and a linespacing whce separately movable on a common axis, a connecting clutchincludin balls, a block which fits in longitudinal s ots in the platene0 shaft and on which the balls bear, a spring contained in the platenshaft` and -acting against the block, and a releasing device, the blockbeing normally ressed against the e balls by the spring and lbeingmovable by platen-shaft and .surrounded the releasin device against theforce of the e5 sprin to ro l the balls axially oi the clutch. 10. n atypewriting maclune, comprising a cylindrica platen and a line-spacingwheel separately movable on a common axis, a connecting clutch includinga recessed 70 body, jamb-blocks, balls, and a device on which the ballsbear and through which said axis passes, the body being fast on the bythe linespacing wheel, the jamb-bloelis, balls and said device being inthe body, the balls boing between the jamb-blocks and said device, andthe jamb-blocks being between the balls and line-spacing wheel, and saiddevice being movable lengthwise el said axis and operative on the ballsto roll them axially of the clutch.

11. In a t pewriting machine, comprising a eylindricailplaten andaline-spacing wheel separately movable on a common axis, a con- 8anecting clutch including a recessed body, Iamb-blocks,balls, and adevice on which the alls bear and through which said axis passes, thebody beine' fast on the platenshaft and surrounds( by the line-spacingJ0 wheel, the jamb-blocks, balls and said device being in the body, theballs being between the )amb-blocks and said device, and the jamb-blocksbeing between the balls and linepacin wheel, the bearing surfaces ol'said ao evice eing in'converging planes that meet at a point on saidaxis remote from the clutch, and said device being constrained to turnwith the laten and being movable lengthwise of said axis and o ierativeon'the bals to roll them axially of tlhe clutch.

12. In a typewriting machine, comprising a cylindrica platen and aline-spacing wheel separately movable on a common axis, a connectinclutch including a recessed body, jamb-bloc cs, balls, and a device onwhich the balls bear and through which said axis passes, the body beintast on the platenshaft Aand surroundeda by the line-spacing wheel,the-jamb-blocks, balls and said device 110 beine inthe body, the ballsbeing between the ]ambblocks and said device, and the jamb-bloeks beingbetween the balls and lincspacing wheel, the inner homing-surfaces oltie jamb-bloclcs sloping toward a point on said axis remote from theclutch, and said device being movable lengthwise of said axis and-operative on the balls to roll them axially of the clutch. y

13. In a typewriting machine, comprising a cylindrica platen and aline-spacing wheel separately movable on a. common axis, a conneetingclutch, including a recessed body, Jamie-blocks, balls, and a device onwhich the balls bear and through which said axis passes, the body beingfast on the platen shaft and .surrounded by the line spacing wheel, the)amb-blocks, balls and said device llb .being in the body, the ballsbeing between the jamb-blocks and said device, and the jamb-blocks beingbetween the balls and line-spacing wheel, the bearing surfaces of saiddevice and the inner bearing-surfaces of the jamb-blocks sloping towardpoints on said axis that are remote from and on one side of the clutch,and said device being movable lengthwise of said axis and operative onthe balls to roll them axially of the clutch.

14. In a typewriting machine, comprising a cylindrical platen and aline-spacing wheel separately movable on a common axis, a connectingclutch inclding a recessed body, jamb-blocks, balls, a central block onwhich the balls bear andthroughavhich said axis passes, a spring thatacts lengthwise oi said axis, and a releasing device, the body beingfast on the platen-shaft and surrounded byv the line-spacing Wheel, thejamb blocks, balls and said central block being in the body, the ballsbeing between the .jambblocks and said central block, and the jambblocksbeing between the balls and linespacinggwheel, and said central blockbeing normally pressed against the balls by the spring and being movableby the releasing device against the force of the spring to roll theballs axially of the clutch.

15'. In a typewriting machine, comprising a cylindrical platen and aline-spacing wheel separately movable on a common axis, a connectingclutch including a recessed body, jamb-blocks, balls, a central block onwhich the balls bear\and through which said axis passes, a spring thatacts lengthwise of said axis, and a releasin device, the body being faston the platen-s aft and surrounded by the line-spacing Wheel, thejamb-blocks, balls and said central block being in the body, the ballsbeing between the jambblccks and said central block, and the, jambblocksbeing between the balls and linespacing wheel, the bearing surfaces ofsaid central block and the inner bearing-surfaces of the jamb-blockssloping toward points on said axis that are remote from and on one sideof the clutch, and said central block being normally pressed against theballs by the spring and movable by the releasing device against theforce of the spring to roll the balls axially vof the clutch.

1G. Inatypewriting machine,comprising acylindrical platen and aline-spacing wheel separately movable ona common axis, a Iconnectingclutch including balls, a block on which the balls bear and throughwhich said axis passes, a spring that acts lengthwise of said axis, anda pushrod which projects from the platen shaft, the block being normallypressed against the balls by the spring and movable by the push-rodagainst the force of the spring to roll the balls axially of the clutch.

17. In a typewriting machine, comprising a cylindrical plat-en and aline-spacing wheel separately movable on a common axis, a connectingclutch including a recessed body fast on the platen-shaft, jambfblocks,balls, a central block on which the balls bear and through which saidaxis passes, a sp1-ing that acts lengthwise of said axis, andA a pushrod projecting 'from the platen-shaft, the line-spacing wheelsurrounding the bod and iitting loosely in a cylindrical case-a fixed tothe platen, the jamb-blocks, balls and said central block being in thebody, the balls being between the jamb-blocks and saiY central block,and ilie janib-blocks being' between the balls and line-spacing wheel,the bearing surfaces of said central block and inner bearingesurfaces ofthe jamb-blocks sloping toward points on said4 axis that are remote fromand on one side of the clutch, and said central block being Y normally,pressed against the balls by the spring and being movable by the pushrod against the force ofgthe spring to roll the balls axially of theclutch. '18. In a typewriting machine,- comprising a cylindrical platenanda line spacing wheel separately movable on a common axis, aconnecting rotary clutch including a pair of rollers and a' device whichextends between them and has opposite faces on which the rollers actwhen the platen and line spacing wheel are clutched together, and Whichlits looselyin an opening in the platen shaft, Said device being movablein the directions in which the rollers travel as they roll upon it, andbeing flu-ther movable bodily toward either roller when that roller isloose.

19. in a typcwriting inachine, the Combination of a platen, a linespacing Wheel, and a connecting clutch, -said clutch comprising a pairof rollers and an intermediate loosely mounted self-adjusting doubleWedge capable of movement both longitudinally and transversely of theplaten.

Signed at Syracuse, in the county of Onondaga, and State of New York,this fifteenth clay of April, A. D. 1914..

ARTHUR J. BRIGGS.

Witnesses 1.

EARL S. BoYN'roN, WV. H. Ennmremi.

